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.|. T. BUDD.

Ht Air Furnace.

Patented Oct. 2, M866.

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zwavel/fors /M m@ W NITED STATES PATENT OFFICE'.

JOHN T. BUDD, OF NEW YORK, N. Y.

HOT-AIR FURNACE.

Specification forming part ofLetters Patent No. 58,373, dated October 2,1866.

To all lwhom t may concern:

Beit known that I, JOHN T. BUDD, of the city and State of New York, haveinvented and made a certain Improvementin Hot-Air Furnaces; and I dohereby declare the following to be a full, clear, a-nd exact descriptionof the same, reference being had to the annexed drawings, making part ofthis specilication, wherein* j Figure lis a vertical section of myimproved furnace, and Fig. 2 is an exterior perspective view of thesame.. g

Similar marks of reference denote the same parts. j

The object of my invention is to convey a regulated supply of heated airtothe re at or near the top of the fue] toA promote a perfectcombustion. To effect this I employ a casing surrounding the firepot,with openin gs into the tire-chamber, and with a register or door toregulate the admission of air; and I employ radiatingpipes at the sidesof the furnace to increase the heating-surface.

In the drawings, a represents the ash-pit; b, the re-pot; c, the fuelslide and door; and d, a dome over the tire, from which apipe, `c, anddamper for kindling passes to the chimney.

On each side of the dome d I place radiating-tubes f, running back andforth, and terminating in a lateral connection, g, to the tube e. Theseradiators j' increase the heatingsurface, aud they may be tted withOpenings and covers inthe elbows for cleaning.

Around the lire-pot b is an air jacket or cas* ing, h, having holes inits upper surface below a perforated shield, la, which is near the levelof the top of the fuel in the fire-pot b, and

said shield, being perforated with numerous small holes, a supply of airis allowed to pass in above the fire for consuming the gases andrendering the combustion more perfect. The air becomes highly heated bycontact with the exterior of the re-pot, and hence is adapted to promotecombustion.

The admission of air to the jacket hinay be regulated by a door orregister at i, and, it' desired, a thorough ventilation of apartments vmay be effec-ted by a descending pipe leading from such apartments andconnecting with the air-jacket h.

By 4the air-jacket surrounding the tire-pot and conveying its heat intothe furnace itself, the dryness of atmosphere experienced from thered-hot re-pot is prevented., and at the same time no heat is lost, asthe temperature of the entire furnace is increased by the hot aircarried into it from the jacket.

What I claim, and desire to secure by Letters Patent, is-

1. The dome d, pipe c, and damper, in combination with the two ranges ofreturn-pipes f at the sides of the furnace, connected to the pipe e bythe lateral connections g, as and for the purposes set forth. j

2. The air-jacket 71 surrounding the lire-pot, in combination with theshield k, for allowing a regulated quant-ity ot' heated atmosphere topass into the gases above the lire for their consumption, as set forth.

Dated this 21st day of May, A.. D. 1866.

JOHN T. BUDD.

Witnesses:

CRAs. H. SMITH, GEO. D. WALKER.

